Method for promoting plants to restore soil polluted by nickel through vesicularis pseudo unit cell bacterium

Abstract

A method using pseudomanas vesicularis to promote plant to repair the soil polluted by Ni features that said pseudomanas vesicularis, which can secrete Fe arrier and decrease the content of ethene in plant, is inoculated to the root of plant growing in said polluted soil for increasing the effect of plant to absorb the Ni, so repairing the soil.

Description

technical field [0001] The invention relates to a method for promoting phytoremediation of soil nickel pollution by utilizing Pseudomonas vesicularis. Background technique [0002] Heavy metal pollution in soil has a wide range of sources and various forms. For example, waste water, waste gas and waste residues discharged in the process of industrial production, as well as chemical fertilizers, pesticides and herbicides used in large quantities in agricultural production. When the amount of these pollutants absorbed by the soil exceeds its own purification capacity, it leads to soil pollution. According to statistics, millions of tons of toxic heavy metals are released into the environment every year around the world, of which 381,000 tons are nickel. By 1998, the area of ​​my country's farmland polluted by heavy metals had reached 20 million hectares, which had a non-negligible impact on agricultural production, environmental safety and human health. [0003] At present,...

AI Technical Summary

Problems solved by technology

[0006] Although some successful cases have been achieved in the treatment of heavy metal-contaminated soils by using hyperaccumulative plants, most of these plants grow slowly and have low biomass due to the mutants produced under long-term heavy metal stress soil conditions and climate conditions. small, which to some extent limits the efficiency of soil purification

These factors make the large-scale commercial utilization of hyperaccumulator plants still have a certain gap